Answer:
$12
Step-by-step explanation:
Total Manufacturing Cost at 9,000 units:
= Direct materials + Direct labor + Variable manufacturing overhead + Fixed manufacturing overhead
= ($6.85 per unit × 9,000) + ($3.80 per unit × 9,000) + ($1.35 per unit × 9,000) + $108,000
= $61,650 + $34,200 + $12,150 + $108,000
= $216,000
Total Manufacturing Cost at 9,001 units:
= Direct materials + Direct labor + Variable manufacturing overhead + Fixed manufacturing overhead
= ($6.85 per unit × 9,001) + ($3.80 per unit × 9,001) + ($1.35 per unit × 9,001) + $108,000
= $61,656.85 + $34,203.80 + $12,151.35 + $108,000
= $216,012
Therefore, the incremental manufacturing cost:
= Total Manufacturing Cost at 9,001 units - Total Manufacturing Cost at 9,000 units
= $216,012 - $216,000
= $12